and jim axelrod introduces us to math genius john urschel who sure knows how to divideadefensiveline.>> i feel like it's what i'm here to do. >> reporter: which one, the football or the math? >> both.
and jim axelrod introduces us to math genius john urschel who sure knows how to divide a defensive line. >> i feel like it's what i'm here to do. >> reporter: which one, the football or the math? >> both.